These updates provide no additional functions, but users will notice several visual changes. Some changes included updated typefaces, new iconography, restyled documents list, and redesigned controls.
Google says this redesign is part of a greater effort to bring consistency to the look and feel of its G Suite apps. The redesign abides by Google’s material design language with ease-of-use in mind.
Google also updated its Drive app earlier this year. The redesign brought it more in line with the rest of the G Suite apps. This latest update pushes uniformity even further, making a more cohesive G Suite experience.
The Docs and Slides update should have released already. Sheets updates began rolling out yesterday. To get these changes as soon as possible, head to the Play Store to make sure you have the latest version of the apps installed.